Home / 78,868,356.70-118,103,469.45-51,795,435.10

Finding the Fourth Proportional to 78,868,356.70, 118,103,469.45 and 51,795,435.10

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Solution

The fourth proportional to 78,868,356.70, 118,103,469.45 and 51,795,435.10 is: 77,562,419.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,868,356.70 : 118,103,469.45 = 51,795,435.10 : x
  2. Step 2: Convert to fraction form
    78,868,356.70/118,103,469.45 = 51,795,435.10/x
  3. Step 3: Cross multiply
    78,868,356.70x = 118,103,469.45 × 51,795,435.10
  4. Step 4: Simplify right side
    78,868,356.70x = 6,117,220,586,982,308
  5. Step 5: Solve for x
    x = 6,117,220,586,982,308/78,868,356.70
  6. Step 6: Final answer
    x = 77,562,419.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.